IOTA/IOTA-ES occultation update for (3667) Anne-Marie / TYC 3353-01777-1 event on 2012 Dec 12, 05:23 UT Visible from Brazil, Ecuador Summary ------- On 2012 Dec 12 UT, the 23 km diameter asteroid (3667) Anne-Marie will occult a 10.2 mag star in the constellation Auriga for observers along a path across Brazil, Ecuador. In the case of an occultation, the combined light of the asteroid and the star will drop by 5.2 mag to 15.4 mag (the magnitude of the asteroid) for at most 2.6 seconds. This update is based on UNSO/Flagstaff astrometry for the asteroid kindly provided by Alice Monet, historical astrometry from the MPC files (via AstDys), and the following catalogs for the star position: UCAC. The event at a glimpse ---------------------- * Rank: 16 * date and approx. time of event: 2012 Dec 12, 05:15 - 2012 Dec 12, 05:30 UT * geocentric midpoint of event [JD]: 2456273.724425 * magnitude of target star: 10.2 * magnitude drop [mag]: 5.2 * estimated maximum duration [s]: 2.6 * Moon: 2 % sunlit, 147° distance * Sun: 153° distance * rough path description: Brazil, Ecuador The occultation path -------------------- * approximate projected width [km]: 37 * 1 sigma uncertainty interval [path widths]: +/- 4.08 * 1 sigma uncertainty interval [seconds]: +/- 10.4 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .137 +/- .090) * 1 sigma uncertainty ellipse (major, minor, PA): ( .137", .089", 83° ) * approx speed of asteroid's shadow [km/s]: 8.8435 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 3353-01777-1 by 3667 Anne-Marie on 2012 Dec 12 Centre Star Star Sun Path Limits Error Limits E. Longitude Latitude U.T. Alt Az Alt Limit 1 Limit 2 Limit 3 Limit 4 o ' " o ' " h m s o o o o ' " o ' " o ' " o ' " Longitude Longitude Longitude Longitude - 37 15 50 -30 0 0 5 15 43 1 333 -23 - 37 2 25 - 37 29 18 ... .. .. - 39 21 15 - 37 52 53 -29 0 0 5 15 43 2 334 -24 - 37 39 27 - 38 6 22 ... .. .. - 39 58 31 - 38 31 27 -28 0 0 5 15 44 3 334 -25 - 38 17 59 - 38 44 58 ... .. .. - 40 37 26 - 39 11 35 -27 0 0 5 15 46 5 334 -26 - 38 58 4 - 39 25 9 ... .. .. - 41 18 5 - 39 53 20 -26 0 0 5 15 48 6 335 -27 - 39 39 46 - 40 6 58 ... .. .. - 42 0 30 - 40 36 48 -25 0 0 5 15 50 7 335 -28 - 40 23 8 - 40 50 31 ... .. .. - 42 44 46 - 41 22 1 -24 0 0 5 15 54 8 335 -30 - 41 8 16 - 41 35 50 ... .. .. - 43 31 0 - 42 9 6 -23 0 0 5 15 57 9 336 -31 - 41 55 14 - 42 23 2 - 40 4 20 - 44 19 16 - 42 58 8 -22 0 0 5 16 1 10 336 -32 - 42 44 8 - 43 12 13 - 40 52 14 - 45 9 42 - 43 49 15 -21 0 0 5 16 6 12 336 -33 - 43 35 5 - 44 3 29 - 41 42 1 - 46 2 26 - 44 42 33 -20 0 0 5 16 12 13 337 -35 - 44 28 13 - 44 56 59 - 42 33 47 - 46 57 37 - 45 38 13 -19 0 0 5 16 18 14 337 -36 - 45 23 39 - 45 52 51 - 43 27 39 - 47 55 26 - 46 36 23 -18 0 0 5 16 25 15 338 -37 - 46 21 35 - 46 51 16 - 44 23 48 - 48 56 6 - 47 37 16 -17 0 0 5 16 32 17 338 -39 - 47 22 12 - 47 52 26 - 45 22 21 - 49 59 52 - 48 41 7 -16 0 0 5 16 41 18 338 -40 - 48 25 43 - 48 56 36 - 46 23 31 - 51 7 0 - 49 48 10 -15 0 0 5 16 50 19 339 -41 - 49 32 25 - 50 4 2 - 47 27 30 - 52 17 53 - 50 58 47 -14 0 0 5 17 0 21 340 -43 - 50 42 35 - 51 15 5 - 48 34 35 - 53 32 56 - 52 13 19 -13 0 0 5 17 12 22 340 -44 - 51 56 38 - 52 30 8 - 49 45 3 - 54 52 41 - 53 32 17 -12 0 0 5 17 24 23 341 -46 - 53 15 1 - 53 49 41 - 50 59 15 - 56 17 46 - 54 56 15 -11 0 0 5 17 37 25 341 -47 - 54 38 18 - 55 14 21 - 52 17 39 - 57 49 5 - 56 25 58 -10 0 0 5 17 52 26 342 -49 - 56 7 13 - 56 44 55 - 53 40 47 - 59 27 44 - 58 2 26 - 9 0 0 5 18 9 27 343 -51 - 57 42 42 - 58 22 24 - 55 9 19 - 61 15 15 - 59 46 58 - 8 0 0 5 18 27 29 344 -53 - 59 25 59 - 60 8 12 - 56 44 7 - 63 13 54 - 61 41 22 - 7 0 0 5 18 48 30 345 -54 - 61 18 50 - 62 4 16 - 58 26 20 - 65 27 3 - 63 48 22 - 6 0 0 5 19 11 32 346 -56 - 63 23 45 - 64 13 28 - 60 17 33 - 68 0 28 Latitude Latitude Latitude Latitude - 65 0 0 - 5 29 6 5 19 24 33 347 -57 - 5 18 10 - 5 40 5 - 3 50 40 - 7 11 35 - 66 0 0 - 5 4 48 5 19 36 33 348 -58 - 4 53 58 - 5 15 41 - 3 27 14 - 6 46 18 - 67 0 0 - 4 41 54 5 19 47 34 348 -59 - 4 31 10 - 4 52 41 - 3 5 8 - 6 22 31 - 68 0 0 - 4 20 23 5 19 59 34 349 -60 - 4 9 44 - 4 31 6 - 2 44 22 - 6 0 10 - 69 0 0 - 4 0 14 5 20 10 35 350 -60 - 3 49 40 - 4 10 52 - 2 24 54 - 5 39 15 - 70 0 0 - 3 41 25 5 20 22 35 350 -61 - 3 30 55 - 3 51 58 - 2 6 43 - 5 19 43 - 71 0 0 - 3 23 55 5 20 33 36 351 -62 - 3 13 28 - 3 34 24 - 1 49 47 - 5 1 33 - 72 0 0 - 3 7 42 5 20 45 36 352 -62 - 2 57 19 - 3 18 7 - 1 34 7 - 4 44 44 - 73 0 0 - 2 52 46 5 20 57 36 352 -63 - 2 42 27 - 3 3 8 - 1 19 40 - 4 29 15 - 74 0 0 - 2 39 5 5 21 9 37 353 -63 - 2 28 49 - 2 49 24 - 1 6 27 - 4 15 5 - 75 0 0 - 2 26 40 5 21 20 37 354 -64 - 2 16 26 - 2 36 55 - 0 54 25 - 4 2 12 - 76 0 0 - 2 15 28 5 21 32 37 355 -64 - 2 5 17 - 2 25 41 - 0 43 35 - 3 50 36 - 77 0 0 - 2 5 29 5 21 44 38 355 -64 - 1 55 20 - 2 15 40 - 0 33 55 - 3 40 17 - 78 0 0 - 1 56 43 5 21 56 38 356 -65 - 1 46 36 - 2 6 52 - 0 25 26 - 3 31 12 - 79 0 0 - 1 49 9 5 22 8 38 357 -65 - 1 39 4 - 1 59 17 - 0 18 6 - 3 23 22 - 80 0 0 - 1 42 47 5 22 20 38 358 -65 - 1 32 43 - 1 52 53 - 0 11 56 - 3 16 47 - 81 0 0 - 1 37 36 5 22 32 38 358 -65 - 1 27 33 - 1 47 41 - 0 6 55 - 3 11 25 - 82 0 0 - 1 33 36 5 22 44 38 359 -65 - 1 23 34 - 1 43 40 - 0 3 2 - 3 7 16 - 83 0 0 - 1 30 46 5 22 56 38 360 -65 - 1 20 45 - 1 40 50 - 0 0 18 - 3 4 21 - 84 0 0 - 1 29 7 5 23 8 38 1 -65 - 1 19 6 - 1 39 10 0 1 18 - 3 2 38 - 85 0 0 - 1 28 39 5 23 20 38 1 -65 - 1 18 38 - 1 38 42 0 1 46 - 3 2 9 - 86 0 0 - 1 29 20 5 23 32 38 2 -65 - 1 19 20 - 1 39 24 0 1 5 - 3 2 52 - 87 0 0 - 1 31 13 5 23 44 38 3 -65 - 1 21 11 - 1 41 16 - 0 0 43 - 3 4 48 - 88 0 0 - 1 34 15 5 23 55 38 4 -65 - 1 24 13 - 1 44 20 - 0 3 40 - 3 7 58 - 89 0 0 - 1 38 29 5 24 7 38 5 -64 - 1 28 26 - 1 48 34 - 0 7 46 - 3 12 20 - 90 0 0 - 1 43 53 5 24 19 38 5 -64 - 1 33 49 - 1 54 0 - 0 13 0 - 3 17 56 - 91 0 0 - 1 50 29 5 24 31 38 6 -64 - 1 40 24 - 2 0 37 - 0 19 23 - 3 24 46 - 92 0 0 - 1 58 17 5 24 43 37 7 -63 - 1 48 10 - 2 8 26 - 0 26 56 - 3 32 50 - 93 0 0 - 2 7 17 5 24 55 37 8 -63 - 1 57 7 - 2 17 28 - 0 35 38 - 3 42 9 - 94 0 0 - 2 17 29 5 25 7 37 8 -62 - 2 7 18 - 2 27 43 - 0 45 31 - 3 52 44 - 95 0 0 - 2 28 55 5 25 18 37 9 -62 - 2 18 41 - 2 39 12 - 0 56 35 - 4 4 35 - 96 0 0 - 2 41 36 5 25 30 36 10 -61 - 2 31 19 - 2 51 55 - 1 8 50 - 4 17 43 - 97 0 0 - 2 55 31 5 25 42 36 10 -61 - 2 45 11 - 3 5 54 - 1 22 18 - 4 32 9 - 98 0 0 - 3 10 42 5 25 53 35 11 -60 - 3 0 19 - 3 21 8 - 1 36 59 - 4 47 54 - 99 0 0 - 3 27 11 5 26 5 35 12 -59 - 3 16 43 - 3 37 40 - 1 52 54 - 5 4 59 -100 0 0 - 3 44 57 5 26 16 34 12 -59 - 3 34 25 - 3 55 31 - 2 10 5 - 5 23 25 -101 0 0 - 4 4 2 5 26 28 34 13 -58 - 3 53 26 - 4 14 41 - 2 28 31 - 5 43 15 -102 0 0 - 4 24 28 5 26 39 33 14 -57 - 4 13 48 - 4 35 12 - 2 48 15 - 6 4 28 -103 0 0 - 4 46 16 5 26 50 33 14 -56 - 4 35 30 - 4 57 5 - 3 9 18 - 6 27 7 -104 0 0 - 5 9 28 5 27 1 32 15 -55 - 4 58 36 - 5 20 22 - 3 31 40 - 6 51 14 -105 0 0 - 5 34 4 5 27 12 32 16 -54 - 5 23 7 - 5 45 5 - 3 55 24 - 7 16 50 -106 0 0 - 6 0 8 5 27 23 31 16 -53 - 5 49 4 - 6 11 15 - 4 20 31 - 7 43 57 -107 0 0 - 6 27 40 5 27 34 30 17 -53 - 6 16 29 - 6 38 55 - 4 47 3 - 8 12 38 -108 0 0 - 6 56 44 5 27 45 29 17 -52 - 6 45 25 - 7 8 6 - 5 15 2 - 8 42 56 -109 0 0 - 7 27 21 5 27 55 29 18 -51 - 7 15 54 - 7 38 50 - 5 44 29 - 9 14 52 -110 0 0 - 7 59 33 5 28 6 28 18 -50 - 7 47 58 - 8 11 12 - 6 15 27 - 9 48 30 -111 0 0 - 8 33 24 5 28 16 27 19 -49 - 8 21 39 - 8 45 12 - 6 47 58 -10 23 52 -112 0 0 - 9 8 56 5 28 26 26 19 -48 - 8 57 2 - 9 20 54 - 7 22 5 -11 1 3 -113 0 0 - 9 46 12 5 28 36 25 20 -46 - 9 34 7 - 9 58 21 - 7 57 49 -11 40 6 -114 0 0 -10 25 16 5 28 46 24 20 -45 -10 13 0 -10 37 37 - 8 35 15 -12 21 5 -115 0 0 -11 6 12 5 28 55 23 21 -44 -10 53 43 -11 18 45 - 9 14 25 -13 4 4 -116 0 0 -11 49 3 5 29 5 22 21 -43 -11 36 21 -12 1 50 - 9 55 23 -13 49 8 -117 0 0 -12 33 54 5 29 14 21 22 -42 -12 20 57 -12 46 55 -10 38 11 -14 36 24 -118 0 0 -13 20 49 5 29 22 20 22 -41 -13 7 37 -13 34 6 -11 22 55 -15 25 56 -119 0 0 -14 9 54 5 29 31 19 22 -39 -13 56 26 -14 23 28 -12 9 38 -16 17 52 -120 0 0 -15 1 15 5 29 39 18 23 -38 -14 47 29 -15 15 8 -12 58 25 -17 12 19 -121 0 0 -15 54 58 5 29 47 17 23 -37 -15 40 52 -16 9 11 -13 49 22 -18 9 26 -122 0 0 -16 51 11 5 29 54 16 24 -36 -16 36 43 -17 5 46 -14 42 33 -19 9 22 -123 0 0 -17 50 1 5 30 1 14 24 -34 -17 35 9 -18 5 0 -15 38 5 -20 12 19 -124 0 0 -18 51 37 5 30 8 13 25 -33 -18 36 19 -19 7 3 -16 36 5 -21 18 30 -125 0 0 -19 56 11 5 30 14 12 25 -31 -19 40 24 -20 12 6 -17 36 40 -22 28 9 -126 0 0 -21 3 54 5 30 19 10 25 -30 -20 47 35 -21 20 22 -18 40 0 -23 41 35 -127 0 0 -22 14 59 5 30 24 9 26 -28 -21 58 5 -22 32 4 -19 46 13 -24 59 9 -128 0 0 -23 29 44 5 30 29 7 26 -27 -23 12 10 -23 47 31 -20 55 32 -26 21 19 -129 0 0 -24 48 28 5 30 32 6 27 -25 -24 30 8 -25 7 2 .. .. .. -27 48 36 -130 0 0 -26 11 35 5 30 35 4 27 -24 -25 52 22 -26 31 3 .. .. .. -29 21 45 -131 0 0 -27 39 32 5 30 37 2 28 -22 -27 19 19 -28 0 5 .. .. .. .. .. .. -132 0 0 -29 12 58 5 30 38 1 28 -20 -28 51 33 -29 34 46 .. .. .. .. .. .. Uncertainty in time = +/- 16 secs Prediction of 2012 Dec 3.0 Data for the target star ------------------------ * name: TYC 3353-01777-1 * constellation : Auriga * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 05 14 32.8529 DE: +50 02 00.599 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .018, .017 ) * V mag [mag]: 10.2 * B mag [mag]: 11.1 * Diameter [mas]: 0 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (3667) Anne-Marie approx. diameter [km]: 23 approx. diameter ["]: .022 distance from Earth [AU]: 1.44500 * orbital information: orbit source: Preston date of fit: 2012 Nov 29 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 691 number of rejected observations: 13 time covered by the observations: 1981 Mar 09 - 2012 Nov 15 1 sigma uncertainty ellipse (major, minor, PA): 0.136, 0.087, 83° remarks: * orbital elements for (3667) Anne-Marie : Mean anomaly = 4.42338769 deg Arg. of pericenter = 74.09712925 deg Long. of node = 0.16553963 deg Inclination = 16.24363319 deg Eccentricity = 0.23353229 Semimajor axis = 3.08161658 AU Perihelion dist = 2.36195961 AU Mag: H = 12.04, G = 0.15 Epoch of elements : MJD 56273.22500000 TDT (2012 Dec 12.225) ------ occelmnt file for Occult BEGIN ----------------------------------- 2012 Dec 12 3667 Anne-Marie 5h 23.2m UT 10.2 5 14 32.853 50 2 0.60TYC 3353-01777-1 11.1 15.4 23 2.6 1.445 -3.151 0.66 -83.4753 50.032 97.66 -23.10 5.3862 -0.01763 -0.78269 -4.99029 0.11098 0.00008 -0.00263 2000 3.835810201212 9.00000 74.097129 0.165540 16.2436330.23353229 3.0816166 2.361959612.0 5.00.15 RATE 1.8219480 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.137 0.089 83 5.08 0.090 0 0-1-1 056264.0020121212_1777-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2012 Nov 29, 23:11 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org